1
|
Abideen ZU, Arifeen WU, Bandara YMNDY. Emerging trends in metal oxide-based electronic noses for healthcare applications: a review. NANOSCALE 2024. [PMID: 38680123 DOI: 10.1039/d4nr00073k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/01/2024]
Abstract
An electronic nose (E-nose) is a technology fundamentally inspired by the human nose, designed to detect, recognize, and differentiate specific odors or volatile components in complex and chaotic environments. Comprising an array of sensors with meticulously designed nanostructured architectures, E-noses translate the chemical information captured by these sensors into useful metrics using complex pattern recognition algorithms. E-noses can significantly enhance the quality of life by offering preventive point-of-care devices for medical diagnostics through breath analysis, and by monitoring and tracking hazardous and toxic gases in the environment. They are increasingly being used in defense and surveillance, medical diagnostics, agriculture, environmental monitoring, and product validation and authentication. The major challenge in developing a reliable E-nose involves miniaturization and low power consumption. Various sensing materials are employed to address these issues. This review presents the key advancements over the last decade in E-nose technology, specifically focusing on chemiresistive metal oxide sensing materials. It discusses their sensing mechanisms, integration into portable E-noses, and various data analysis techniques. Additionally, we review the primary metal oxide-based E-noses for disease detection through breath analysis. Finally, we address the major challenges and issues in developing and implementing a portable metal oxide-based E-nose.
Collapse
Affiliation(s)
- Zain Ul Abideen
- Nanotechnology Research Laboratory, Research School of Chemistry, College of Science, Australian National University, Canberra, ACT, 2601, Australia.
| | - Waqas Ul Arifeen
- School of Mechanical Engineering, Yeungnam University, Daehak-ro, Gyeongsan-si, Gyeongbuk-do, 38541, South Korea
| | - Y M Nuwan D Y Bandara
- Nanotechnology Research Laboratory, Research School of Chemistry, College of Science, Australian National University, Canberra, ACT, 2601, Australia.
| |
Collapse
|
2
|
Chang Y, Dong C, Zhou D, Li A, Dong W, Cao XZ, Wang G. Fabrication and Elastic Properties of TiO 2 Nanohelix Arrays through a Pressure-Induced Hydrothermal Method. ACS NANO 2021; 15:14174-14184. [PMID: 34498858 DOI: 10.1021/acsnano.0c10901] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
TiO2 nanohelices (NHs) have attracted extensive attention owing to their high aspect ratio, excellent flexibility, elasticity, and optical properties, which endow promising performances in a vast range of vital fields, such as optics, electronics, and micro/nanodevices. However, preparing rigid TiO2 nanowires (TiO2 NWs) into spatially anisotropic helical structures remains a challenge. Here, a pressure-induced hydrothermal strategy was designed to assemble individual TiO2 NWs into a DNA-like helical structure, in which a Teflon block was placed in an autoclave liner to regulate system pressure and simulate a cell-rich environment. The synthesized TiO2 NHs of 50 nm in diameter and 5-7 mm in length approximately were intertwined into nanohelix bundles (TiO2 NHBs) with a diameter of 20 μm and then assembled into vertical TiO2 nanohelix arrays (NHAs). Theoretical calculations further confirmed that straight TiO2 NWs prefer to convert into helical conformations with minimal entropy (S) and free energy (F) for continuous growth in a confined space. The excellent elastic properties exhibit great potential for applications in flexible devices or buffer materials.
Collapse
Affiliation(s)
- Yueqi Chang
- Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory of Function Materials for Molecule & Structure Construction, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, People's Republic of China
- Shunde Graduate School of University of Science and Technology Beijing, Foshan 528399, People's Republic of China
| | - Cheng Dong
- School of Materials Science and Engineering, Shandong University of Technology, Zibo 255049, People's Republic of China
| | - Dongxue Zhou
- Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory of Function Materials for Molecule & Structure Construction, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, People's Republic of China
- Shunde Graduate School of University of Science and Technology Beijing, Foshan 528399, People's Republic of China
| | - Ang Li
- School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, People's Republic of China
| | - Wenjun Dong
- Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory of Function Materials for Molecule & Structure Construction, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, People's Republic of China
- Shunde Graduate School of University of Science and Technology Beijing, Foshan 528399, People's Republic of China
| | - Xue-Zheng Cao
- Department of Physics, Xiamen University, Xiamen 361005, People's Republic of China
| | - Ge Wang
- Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory of Function Materials for Molecule & Structure Construction, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, People's Republic of China
| |
Collapse
|
3
|
Jeong SY, Kim JS, Lee JH. Rational Design of Semiconductor-Based Chemiresistors and their Libraries for Next-Generation Artificial Olfaction. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2002075. [PMID: 32930431 DOI: 10.1002/adma.202002075] [Citation(s) in RCA: 90] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 05/05/2020] [Indexed: 05/18/2023]
Abstract
Artificial olfaction based on gas sensor arrays aims to substitute for, support, and surpass human olfaction. Like mammalian olfaction, a larger number of sensors and more signal processing are crucial for strengthening artificial olfaction. Due to rapid progress in computing capabilities and machine-learning algorithms, on-demand high-performance artificial olfaction that can eclipse human olfaction becomes inevitable once diverse and versatile gas sensing materials are provided. Here, rational strategies to design a myriad of different semiconductor-based chemiresistors and to grow gas sensing libraries enough to identify a wide range of odors and gases are reviewed, discussed, and suggested. Key approaches include the use of p-type oxide semiconductors, multinary perovskite and spinel oxides, carbon-based materials, metal chalcogenides, their heterostructures, as well as heterocomposites as distinctive sensing materials, the utilization of bilayer sensor design, the design of robust sensing materials, and the high-throughput screening of sensing materials. In addition, the state-of-the-art and key issues in the implementation of electronic noses are discussed. Finally, a perspective on chemiresistive sensing materials for next-generation artificial olfaction is provided.
Collapse
Affiliation(s)
- Seong-Yong Jeong
- Department of Materials Science and Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Jun-Sik Kim
- Department of Materials Science and Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Jong-Heun Lee
- Department of Materials Science and Engineering, Korea University, Seoul, 02841, Republic of Korea
| |
Collapse
|
4
|
Ayvacikli M, Kaynar ÜH, Karabulut Y, Canimoglu A, Bakr M, Akca S, Can N. Synthesis and photoluminescence characteristics of Dy incorporated MoO 3 phosphor: Suppression concentration quenching. Appl Radiat Isot 2020; 164:109321. [PMID: 32819496 DOI: 10.1016/j.apradiso.2020.109321] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 06/25/2020] [Accepted: 06/30/2020] [Indexed: 11/15/2022]
Abstract
A series of MoO3:Dy3+ phosphors have been synthesized via the gel-combustion method. The X-ray and photoluminescence (PL) emission spectra were employed to characterize the obtained phosphors. The prepared samples were characterized through XRD measurements and exhibited that Dy3+ ions can be successfully incorporated into the host material. The PL emission bands of Dy3+ doped MoO3 were observed at 486 nm, 574 nm and 666 nm which are assigned to the transitions of 4F9/2 → 6H15/2, 4F9/2 → 6H13/2 and 4F9/2 → 6H11/2, respectively. Concentration quenching were largely taken into consideration as one of the crucial aspects limiting the application range of phosphors in today's modern world. An abnormal thermal quenching dependence was reported when Dy3+ ions were incorporated into MoO3 host matrix. In order to understand the origin of this beneficial behaviour, energy transfer processes occurring via radiative and nonradiative mechanisms were investigated to elucidate this suppression of the concentration quenching.
Collapse
Affiliation(s)
- M Ayvacikli
- Manisa Celal Bayar University, Hasan Ferdi Turgutlu Technology Faculty, Mechatronics Engineering, Turgutlu-Manisa, Turkey
| | - Ümit H Kaynar
- Bakırcay University, Faculty of Engineering and Architecture, Department of Fundamental Sciences, Menemen, Izmir, Turkey
| | - Y Karabulut
- Department of Physics, Manisa Celal Bayar University, Faculty of Arts and Sciences, Muradiye-Manisa, 45010, Turkey
| | - A Canimoglu
- Nigde Omer Halisdemir University, Faculty of Arts and Sciences, Physics Department, Nigde, Turkey
| | - M Bakr
- Jazan University, Physics Department, P.O. Box 114, 45142, Jazan, Saudi Arabia
| | - S Akca
- Physics Department, Cukurova University, Arts-Sciences Faculty, 01330, Adana, Turkey
| | - N Can
- Department of Physics, Manisa Celal Bayar University, Faculty of Arts and Sciences, Muradiye-Manisa, 45010, Turkey; Jazan University, Physics Department, P.O. Box 114, 45142, Jazan, Saudi Arabia.
| |
Collapse
|
5
|
Kwon H, Yoo H, Nakano M, Takimiya K, Kim JJ, Kim JK. Gate-tunable gas sensing behaviors in air-stable ambipolar organic thin-film transistors. RSC Adv 2020; 10:1910-1916. [PMID: 35494617 PMCID: PMC9048268 DOI: 10.1039/c9ra09195e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Accepted: 12/25/2019] [Indexed: 12/28/2022] Open
Abstract
Chemiresistive gas sensors, which exploit their electrical resistance in response to changes in nearby gas environments, usually achieve selective gas detection using multi-element sensor arrays. As large numbers of sensors are required, they often suffer from complex and high-cost fabrication. Here, we demonstrate an ambipolar organic thin-film transistor as a potential multi-gas sensing device utilizing gate-tunable gas sensing behaviors. Combining behaviors of both electron and hole carriers in a single device, the proposed device showed dynamic changes depending on gate biases and properties of target gases. As a result, the gas response as a function of gate biases exhibits a unique pattern towards a specific gas as well as its concentrations, which is very different from conventional unipolar organic thin-film transistors. In addition, our device showed an excellent air-stable characteristic compared to typical ambipolar transistors, providing great potential for practical use in the future. Ambipolar organic field effect transistor shows a great potential to be used for multi-gas sensing device utilizing gate-tunable gas sensing behaviors.![]()
Collapse
Affiliation(s)
- Hyunah Kwon
- Department of Materials Science and Engineering, POSTECH Pohang 790-784 Republic of Korea
| | - Hocheon Yoo
- Department of Creative IT Engineering and Future IT Innovation Lab, POSTECH Pohang 790-784 Republic of Korea
| | - Masahiro Nakano
- Graduate School of Natural Science and Technology, Kanazawa University Kakuma-machi Kanazawa 920-1192 Japan.,Emergent Molecular Function Research Team, RIKEN Center for Emergent Matter Science (CEMS) 2-1 Hirosawa Wako Saitama 351-0198 Japan
| | - Kazuo Takimiya
- Department of Chemistry, Graduate School of Science, Tohoku University 6-3, Aoba, Aramaki, Aoba-ku Sendai Miyagi 980-8578 Japan.,Emergent Molecular Function Research Team, RIKEN Center for Emergent Matter Science (CEMS) 2-1 Hirosawa Wako Saitama 351-0198 Japan
| | - Jae-Joon Kim
- Department of Creative IT Engineering and Future IT Innovation Lab, POSTECH Pohang 790-784 Republic of Korea
| | - Jong Kyu Kim
- Department of Materials Science and Engineering, POSTECH Pohang 790-784 Republic of Korea
| |
Collapse
|
6
|
Sarkar S, Behunin RO, Gibbs JG. Shape-Dependent, Chiro-optical Response of UV-Active, Nanohelix Metamaterials. NANO LETTERS 2019; 19:8089-8096. [PMID: 31557443 DOI: 10.1021/acs.nanolett.9b03274] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We harness a synergy between morphology and the electromagnetic response of semiconducting material to engineer the chiro-optical properties of metamaterials that are active at ultraviolet (UV) wavelengths. Chiral metamaterials have recently ushered in new research directions in fundamental light-matter interactions, while simultaneously opening a range of promising photonics-based applications from polarization control to improved biosensing methods. Despite these recent advances, to date, very little attention has been focused upon engineered large UV-chiro-optical activity, where naturally occurring molecular optical activity bands are most typically encountered. Here, we systematically alter the morphology of titanium dioxide nanohelices, which make up the elements of the chiral metamaterials, to investigate how the nanoparticle shape affects chiro-optical activity across the UV spectrum. When the nanoscale critical dimensions fall within a particular size range, giant chiro-optical activity is observed, which is on the order of the strongest demonstrated in the UV to date and can be tuned by slight alterations of the nanohelices' morphology.
Collapse
Affiliation(s)
- Sumant Sarkar
- Department of Applied Physics and Materials Science , Northern Arizona University , Flagstaff , Arizona 86011 , United States
| | - Ryan O Behunin
- Department of Applied Physics and Materials Science , Northern Arizona University , Flagstaff , Arizona 86011 , United States
- Center for Materials Interfaces in Research and Applications , Northern Arizona University , Flagstaff , Arizona 86011 , United States
| | - John G Gibbs
- Department of Applied Physics and Materials Science , Northern Arizona University , Flagstaff , Arizona 86011 , United States
- Center for Materials Interfaces in Research and Applications , Northern Arizona University , Flagstaff , Arizona 86011 , United States
| |
Collapse
|
7
|
Collier TP, Portnoi ME. Double-Gated Nanohelix as a Novel Tunable Binary Superlattice. NANOSCALE RESEARCH LETTERS 2019; 14:257. [PMID: 31448386 PMCID: PMC6709081 DOI: 10.1186/s11671-019-3069-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 07/01/2019] [Indexed: 06/10/2023]
Abstract
We theoretically investigate the problem of an electron confined to a nanohelix between two parallel gates modelled as charged wires. The double-gated nanohelix system is a binary superlattice with properties highly sensitive to the gate voltages. In particular, the band structure exhibits energy band crossings for certain combinations of gate voltages, which could lead to quasi-relativistic Dirac-like phenomena. Our analysis for optical transitions induced by linearly and circularly polarized light suggests that a double-gated nanohelix can be used for versatile optoelectronic applications.
Collapse
Affiliation(s)
- Thomas P. Collier
- School of Physics, University of Exeter, Stocker Road, Exeter, EX4 4QL United Kingdom
| | - Mikhail E. Portnoi
- School of Physics, University of Exeter, Stocker Road, Exeter, EX4 4QL United Kingdom
- ITMO University, St. Petersburg, 197101 Russia
| |
Collapse
|
8
|
Lee Y, Kwon H, Yoon JS, Kim JK. Overcoming ineffective resistance modulation in p-type NiO gas sensor by nanoscale Schottky contacts. NANOTECHNOLOGY 2019; 30:115501. [PMID: 30561379 DOI: 10.1088/1361-6528/aaf957] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
We present a gas sensor having nanoscale Schottky contacts on an array of helical-shaped p-type NiO to overcome intrinsically ineffective resistance modulation in the bulk of p-type metal oxides upon gas exposure. The Schottky device shows an abnormal n-type sensing behavior despite using the p-type NiO under reducing gas, with the sensitivity of 142.9% at 200 ppm of hydrogen, much higher than the reference Ohmic device with 0.7% sensitivity. Based on our equivalent circuit model with the quantitative estimation of the modulations in both carrier concentration and Schottky barrier height upon gas exposure, such a high sensitivity and the abnormal sensing behavior are attributed to the predominant modulation in the barrier height at the nanoscale Schottky contacts which are uniquely designed to have top-and-bottom electrodes configuration for efficient gas adsorption and sensitive Schottky barrier height modulation.
Collapse
Affiliation(s)
- Yuna Lee
- Department of Materials Science and Engineering, POSTECH, Pohang 790-784, Republic of Korea
| | | | | | | |
Collapse
|
9
|
Freddi S, Drera G, Pagliara S, Goldoni A, Sangaletti L. Enhanced selectivity of target gas molecules through a minimal array of gas sensors based on nanoparticle-decorated SWCNTs. Analyst 2019; 144:4100-4110. [DOI: 10.1039/c9an00551j] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Layers of CNTs decorated with metal and metal–oxide nanoparticles can be used to develop highly selective gas sensor arrays.
Collapse
Affiliation(s)
- Sonia Freddi
- I-Lamp and Dipartimento di Matematica e Fisica
- Università Cattolica del Sacro Cuore
- 25121 Brescia
- Italy
| | - Giovanni Drera
- I-Lamp and Dipartimento di Matematica e Fisica
- Università Cattolica del Sacro Cuore
- 25121 Brescia
- Italy
| | - Stefania Pagliara
- I-Lamp and Dipartimento di Matematica e Fisica
- Università Cattolica del Sacro Cuore
- 25121 Brescia
- Italy
| | | | - Luigi Sangaletti
- I-Lamp and Dipartimento di Matematica e Fisica
- Università Cattolica del Sacro Cuore
- 25121 Brescia
- Italy
| |
Collapse
|
10
|
Chen Y, Owyeung RE, Sonkusale SR. Combined optical and electronic paper-nose for detection of volatile gases. Anal Chim Acta 2018; 1034:128-136. [PMID: 30193626 DOI: 10.1016/j.aca.2018.05.078] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Revised: 05/14/2018] [Accepted: 05/31/2018] [Indexed: 02/01/2023]
Abstract
In this work, a paper-based optoelectronic sensor (paper-nose) is presented for sensing volatile gases in air. The proposed optoelectronic sensor is a combination of both colorimetric (optical) and chemiresistive (electronic) sensor arrays in order to improve the selectivity of the paper-nose in the complex air background. The optical sensors are based on chemoresponsive dyes, namely Reichardt's dye (2,6-diphenyl-4-(2,4,6-triphenyl-1-pyridinio)phenolate), bromocresol purple, methyl red, bromothymol blue, brilliant yellow and manganese tetraphenylporphyrin (Mn-TPP). The chemiresistive sensors are based on nanomaterials, such as carbon nanotubes (CNT), PEDOT:PSS, graphite, and an ionic liquid, 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (EMI TFSI). Sensor is fabricated through direct handwriting of sensing materials using a pen on paper without the need of expensive cleanroom facilities. The optoelectronic sensor is tested in ambient air with different volatile gases such as methanol, ammonia, toluene, acetone and ethanol and their mixtures of varying concentrations. The detected electrical and optical responses together form a unique signature for each volatile gas and its mixture. Support-vector machine (SVM) is applied for target classification and detection. From the SVM result, it is found that better discriminative power is achieved by combining optical and electrical responses.
Collapse
Affiliation(s)
- Yu Chen
- Electrical and Computer Engineering Department, Tufts University, Medford, MA, 02155, USA; Nano Lab, Advanced Technology Laboratory, Tufts University, Medford, MA, 02155, USA
| | - Rachel E Owyeung
- Chemical Engineering Department, Tufts University, Medford, MA, 02155, USA; Nano Lab, Advanced Technology Laboratory, Tufts University, Medford, MA, 02155, USA
| | - Sameer R Sonkusale
- Electrical and Computer Engineering Department, Tufts University, Medford, MA, 02155, USA; Nano Lab, Advanced Technology Laboratory, Tufts University, Medford, MA, 02155, USA.
| |
Collapse
|
11
|
Seol D, Moon JS, Lee Y, Han J, Jang D, Kang DJ, Moon J, Jang E, Oh JW, Chung H. Feasibility of using a bacteriophage-based structural color sensor for screening the geographical origins of agricultural products. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 197:159-165. [PMID: 29371082 DOI: 10.1016/j.saa.2018.01.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 12/26/2017] [Accepted: 01/04/2018] [Indexed: 06/07/2023]
Abstract
An M13 bacteriophage-based color sensor, which can change its structural color upon interaction with a gaseous molecule, was evaluated as a screening tool for the discrimination of the geographical origins of three different agricultural products (garlic, onion, and perilla). Exposure of the color sensor to sample odors induced the self-assembled M13 bacteriophage bundles to swell by the interaction of amino acid residues (repeating units of four glutamates) on the bacteriophage with the odor components, resulting in a change in the structural color of the sensor. When the sensor was exposed to the odors of garlic and onion samples, the RGB color changes were considerable because of the strong interactions of the odor components such as disulfides with the glutamate residues on the sensor. Although the patterns of the color variations were generally similar between the domestic and imported samples, some degrees of dissimilarities in their intensities were also observed. Although the magnitude of color change decreased for perilla, the color change patterns between the two groups were somewhat different. With the acquired RGB data, a support vector machine was employed to distinguish the domestic and imported samples, and the resulting accuracies in the measurements of garlic, onion, and perilla samples were 94.1, 88.7, and 91.6%, respectively. The differences in the concentrations of the odor components between both groups and/or the presence of specific components exclusively in the odor of one group allowed the color sensor-based discrimination. The demonstrated color sensor was thus shown to be a potentially versatile and simple as an on-site screening tool. Strategies able to further improve the sensor performance were also discussed.
Collapse
Affiliation(s)
- Daun Seol
- Department of Chemistry and Research Institute for Convergence of Basic Sciences, Hanyang University, Seoul 04763, Republic of Korea
| | - Jong-Sik Moon
- BK21 Plus Division of Nano Convergence Technology, Pusan National University, Busan 46241, Republic of Korea
| | - Yujin Lee
- Department of Nano Fusion Technology, Pusan National University, Busan 46241, Republic of Korea
| | - Jiye Han
- Department of Nano Fusion Technology, Pusan National University, Busan 46241, Republic of Korea
| | - Daeil Jang
- Department of Mathematics, College of Natural Sciences, Hanyang University, Seoul, Republic of Korea
| | - Dong-Jin Kang
- Experiment Research Institute, National Agricultural Products Quality Management Service(NAQS), Gimcheon-si 39660, Republic of Korea
| | - Jiyoung Moon
- Experiment Research Institute, National Agricultural Products Quality Management Service(NAQS), Gimcheon-si 39660, Republic of Korea
| | - Eunjin Jang
- Department of Chemistry and Research Institute for Convergence of Basic Sciences, Hanyang University, Seoul 04763, Republic of Korea
| | - Jin-Woo Oh
- BK21 Plus Division of Nano Convergence Technology, Pusan National University, Busan 46241, Republic of Korea; Department of Nano Fusion Technology, Pusan National University, Busan 46241, Republic of Korea; Department of Nanoenergy Engineering, Pusan National University, Busan 46241, Republic of Korea.
| | - Hoeil Chung
- Department of Chemistry and Research Institute for Convergence of Basic Sciences, Hanyang University, Seoul 04763, Republic of Korea.
| |
Collapse
|
12
|
Mohammadzadeh Kakhki R. Recent developments on application of nanometal-oxide based gas sensor arrays. RUSS J APPL CHEM+ 2017. [DOI: 10.1134/s1070427217070023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
13
|
TiO 2 nanoparticles functionalized by Pd nanoparticles for gas-sensing application with enhanced butane response performances. Sci Rep 2017; 7:7692. [PMID: 28794495 PMCID: PMC5550448 DOI: 10.1038/s41598-017-08074-y] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 07/03/2017] [Indexed: 01/08/2023] Open
Abstract
Pd functionalized TiO2 nanoparticles were synthesized by a facile hydrothermal method. The structure, morphology, surface chemical states and surface area were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and N2 adsorption-desorption isotherms, respectively. The as-synthesized pure and Pd functionalized TiO2 nanoparticles were used to fabricate indirect-heating gas sensor, and the gas-sensing characteristics towards butane were investigated. At the optimum temperature, the sensors possess good response, selectivity, response/recovery, repeatability as well as long-term stability. Especially for the high response, the response of 7.5 mol% Pd functionalized TiO2 nanoparticles based sensor reaches 33.93 towards 3000 ppm butane, which is about 9 times higher than that of pure TiO2 nanoparticles. The response and recovery time are 13 and 8 s, respectively. Those values demonstrate the potential of using as-synthesized Pd functionalized TiO2 nanoparticles as butane gas detection, particularly in the dynamic monitoring. Apart from these, a possible mechanism related to the enhanced sensing performance is also investigated.
Collapse
|
14
|
Two-Dimensional Transition Metal Disulfides for Chemoresistive Gas Sensing: Perspective and Challenges. CHEMOSENSORS 2017. [DOI: 10.3390/chemosensors5020015] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
15
|
Ha S, Janissen R, Ussembayev YY, van Oene MM, Solano B, Dekker NH. Tunable top-down fabrication and functional surface coating of single-crystal titanium dioxide nanostructures and nanoparticles. NANOSCALE 2016; 8:10739-48. [PMID: 27160731 DOI: 10.1039/c6nr00898d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Titanium dioxide (TiO2) is a key component of diverse optical and electronic applications that exploit its exceptional material properties. In particular, the use of TiO2 in its single-crystalline phase can offer substantial advantages over its amorphous and polycrystalline phases for existing and yet-to-be-developed applications. However, the implementation of single-crystal TiO2 has been hampered by challenges in its fabrication and subsequent surface functionalization. Here, we introduce a novel top-down approach that allows for batch fabrication of uniform high-aspect-ratio single-crystal TiO2 nanostructures with targeted sidewall profiles. We complement our fabrication approach with a functionalization strategy that achieves dense, uniform, and area-selective coating with a variety of biomolecules. This allows us to fabricate single-crystal rutile TiO2 nanocylinders tethered with individual DNA molecules for use as force- and torque-transducers in an optical torque wrench. These developments provide the means for increased exploitation of the superior material properties of single-crystal TiO2 at the nanoscale.
Collapse
Affiliation(s)
- Seungkyu Ha
- Department of Bionanoscience, Kavli Institute of Nanoscience, Faculty of Applied Sciences, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands.
| | - Richard Janissen
- Department of Bionanoscience, Kavli Institute of Nanoscience, Faculty of Applied Sciences, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands.
| | - Yera Ye Ussembayev
- Department of Bionanoscience, Kavli Institute of Nanoscience, Faculty of Applied Sciences, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands.
| | - Maarten M van Oene
- Department of Bionanoscience, Kavli Institute of Nanoscience, Faculty of Applied Sciences, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands.
| | - Belen Solano
- Department of Bionanoscience, Kavli Institute of Nanoscience, Faculty of Applied Sciences, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands.
| | - Nynke H Dekker
- Department of Bionanoscience, Kavli Institute of Nanoscience, Faculty of Applied Sciences, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands.
| |
Collapse
|
16
|
Liu H, Huang Z, Wei S, Zheng L, Xiao L, Gong Q. Nano-structured electron transporting materials for perovskite solar cells. NANOSCALE 2016; 8:6209-21. [PMID: 26457406 DOI: 10.1039/c5nr05207f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Organic-inorganic hybrid perovskite solar cells have been developing rapidly in the past several years, and their power conversion efficiency has reached over 20%, nearing that of polycrystalline silicon solar cells. Because the diffusion length of the hole in perovskites is longer than that of the electron, the performance of the device can be improved by using an electron transporting layer, e.g., TiO2, ZnO and TiO2/Al2O3. Nano-structured electron transporting materials facilitate not only electron collection but also morphology control of the perovskites. The properties, morphology and preparation methods of perovskites are reviewed in the present article. A comprehensive understanding of the relationship between the structure and property will benefit the precise control of the electron transporting process and thus further improve the performance of perovskite solar cells.
Collapse
Affiliation(s)
- Hefei Liu
- State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing 100871, China.
| | - Ziru Huang
- State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing 100871, China.
| | - Shiyuan Wei
- State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing 100871, China.
| | - Lingling Zheng
- State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing 100871, China.
| | - Lixin Xiao
- State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing 100871, China. and Beijing Engineering Research Center for Active Matrix Display, Beijing 100871, China and New Display Device and System Integration Collaborative Innovation Center of the West Coast of the Taiwan Strait, Fuzhou 350002, China
| | - Qihuang Gong
- State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing 100871, China.
| |
Collapse
|
17
|
|
18
|
Chen N, Deng D, Li Y, Xing X, Liu X, Xiao X, Wang Y. The xylene sensing performance of WO3 decorated anatase TiO2 nanoparticles as a sensing material for a gas sensor at a low operating temperature. RSC Adv 2016. [DOI: 10.1039/c6ra09195d] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Here, the pristine and WO3 decorated TiO2 nanoparticles were synthesized by a one-step hydrothermal without the use of a surfactant or template, and used to fabricate gas sensors.
Collapse
Affiliation(s)
- Nan Chen
- Department of Physics
- Yunnan University
- Kunming
- People's Republic of China
| | - Dongyang Deng
- School of Materials Science and Engineering
- Yunnan University
- Kunming
- People's Republic of China
| | - Yuxiu Li
- School of Materials Science and Engineering
- Yunnan University
- Kunming
- People's Republic of China
| | - Xinxin Xing
- School of Materials Science and Engineering
- Yunnan University
- Kunming
- People's Republic of China
| | - Xu Liu
- School of Materials Science and Engineering
- Yunnan University
- Kunming
- People's Republic of China
| | - Xuechun Xiao
- School of Materials Science and Engineering
- Yunnan University
- Kunming
- People's Republic of China
- Yunnan Province Key Lab of Micro-Nano Materials and Technology
| | - Yude Wang
- Department of Physics
- Yunnan University
- Kunming
- People's Republic of China
- Yunnan Province Key Lab of Micro-Nano Materials and Technology
| |
Collapse
|
19
|
Kwon H, Lee SH, Kim JK. Three-Dimensional Metal-Oxide Nanohelix Arrays Fabricated by Oblique Angle Deposition: Fabrication, Properties, and Applications. NANOSCALE RESEARCH LETTERS 2015; 10:369. [PMID: 26391174 PMCID: PMC4577498 DOI: 10.1186/s11671-015-1057-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Accepted: 08/25/2015] [Indexed: 05/29/2023]
Abstract
Three-dimensional (3D) nanostructured thin films have attracted great attention due to their novel physical, optical, and chemical properties, providing tremendous possibilities for future multifunctional systems and for exploring new physical phenomena. Among various techniques to fabricate 3D nanostructures, oblique angle deposition (OAD) is a very promising method for producing arrays of a variety of 3D nanostructures with excellent controllability, reproducibility, low cost, and compatibility with modern micro-electronic processes. This article presents a comprehensive overview of the principle of OAD, and unique structural and optical properties of OAD-fabricated thin films including excellent crystallinity, accurate tunability of refractive indices, and strong light scattering effect which can be utilized to remarkably enhance performances of various systems such as antireflection coatings, optical filters, photoelectrodes for solar-energy-harvesting cells, and sensing layers for various sensors.
Collapse
Affiliation(s)
- Hyunah Kwon
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 790-784, South Korea
| | - Seung Hee Lee
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 790-784, South Korea
| | - Jong Kyu Kim
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 790-784, South Korea.
| |
Collapse
|
20
|
Singh DP, Lee SH, Choi IY, Kim JK. Spatially graded TiO₂-SiO₂ Bragg reflector with rainbow-colored photonic band gap. OPTICS EXPRESS 2015; 23:17568-75. [PMID: 26191764 DOI: 10.1364/oe.23.017568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
A simple single-step method to fabricate spatially graded TiO2-SiO2 Bragg stack with rainbow colored photonic band gap is presented. The gradation in thickness of the Bragg stack was accomplished with a modified glancing angle deposition (GLAD) technique with dynamic shadow enabled by a block attached to one edge of the rotating substrate. A linear gradation in thickness over a distance of about 17 mm resulted in a brilliant colorful rainbow pattern. Interestingly, the photonic band gap position can be changed across the whole visible wavelength range by linearly translating the graded Bragg stack over a large area substrate. The spatially graded Bragg stack may find potential applications in the tunable optical devices, such as optical filters, reflection gratings, and lasers.
Collapse
|
21
|
Singh DP, Kumar S, Singh JP. Morphology dependent surface enhanced fluorescence study on silver nanorod arrays fabricated by glancing angle deposition. RSC Adv 2015. [DOI: 10.1039/c5ra03225c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The nanorods morphology dependence of surface-enhanced fluorescence (SEF) has been investigated for Rhodamine 6G adsorbed onto silver nanorod arrays.
Collapse
Affiliation(s)
- Dhruv Pratap Singh
- Department of Physics
- Indian Institute of Technology Delhi
- New Delhi 110016
- India
- Max Planck Institute for Intelligent Systems
| | - Samir Kumar
- Department of Physics
- Indian Institute of Technology Delhi
- New Delhi 110016
- India
| | - J. P. Singh
- Department of Physics
- Indian Institute of Technology Delhi
- New Delhi 110016
- India
| |
Collapse
|
22
|
Shi X, Choi IY, Zhang K, Kwon J, Kim DY, Lee JK, Oh SH, Kim JK, Park JH. Efficient photoelectrochemical hydrogen production from bismuth vanadate-decorated tungsten trioxide helix nanostructures. Nat Commun 2014; 5:4775. [DOI: 10.1038/ncomms5775] [Citation(s) in RCA: 336] [Impact Index Per Article: 33.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Accepted: 07/22/2014] [Indexed: 12/22/2022] Open
|
23
|
Ren Z, Gao PX. A review of helical nanostructures: growth theories, synthesis strategies and properties. NANOSCALE 2014; 6:9366-400. [PMID: 24824353 DOI: 10.1039/c4nr00330f] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Helical nanomaterials represent an emerging group of nanostructures with unique spiral geometry as well as multiple functionalities owing to their enriched physical and chemical properties. With the novel properties enabled by their nanoscale dimension and unique geometry, the helical nanostructures may open opportunities to develop our understanding of new physics, chemistry and biology, and enable new nanodevice design and fabrication. This review article presents a comprehensive and in-depth overview of the latest progress in helical nanostructures synthesis, properties and potential applications. Specific attention is concentrated on the crystal growth theory for helical nanostructures, summary of the helical nanomaterials obtained so far, and their fabrication techniques as well as typical physical properties that can be potentially utilized for various applications.
Collapse
Affiliation(s)
- Zheng Ren
- Department of Materials Science and Engineering & Institute of Materials Science, University of Connecticut, Storrs, CT 06269-3136, USA.
| | | |
Collapse
|
24
|
Affiliation(s)
- Jing Bai
- School of Environmental Science and Engineering, Shanghai Jiao Tong University , Shanghai 200240, People's Republic of China
| | | |
Collapse
|
25
|
Stegmann C, Muench F, Rauber M, Hottes M, Brötz J, Kunz U, Lauterbach S, Kleebe HJ, Ensinger W. Platinum nanowires with pronounced texture, controlled crystallite size and excellent growth homogeneity fabricated by optimized pulsed electrodeposition. RSC Adv 2014. [DOI: 10.1039/c3ra46204h] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
26
|
Lü R, Zhou W, Shi K, Yang Y, Wang L, Pan K, Tian C, Ren Z, Fu H. Alumina decorated TiO2 nanotubes with ordered mesoporous walls as high sensitivity NO(x) gas sensors at room temperature. NANOSCALE 2013; 5:8569-8576. [PMID: 23892951 DOI: 10.1039/c3nr01903a] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Alumina (Al2O3) decorated anatase TiO2 nanotubes with ordered mesoporous pore walls (Al2O3/meso-TiO2 nanotubes) are successfully synthesized through vacuum pressure induction technology, and then combined with the thermal decomposition of a mesoporous TiO2 sol precursor, inside the cylindrical nanochannels of an anodic aluminium oxide (AAO) template. The decorated Al2O3 was formed by in situ deposition via direct reaction of the strong acid sol precursor and the nanochannel wall of the AAO template. The resultant Al2O3/meso-TiO2 nanotubes are characterized in detail by transmission electron microscopy, scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, Raman spectroscopy, and N2 adsorption-desorption. The experimental results reveal that the Al2O3/meso-TiO2 nanotubes have a tubular structure with an average diameter of ∼200 nm and highly ordered mesopores in the tubular walls. The Al2O3 is distributed evenly on the anatase TiO2 nanotubes. Moreover, the Al2O3/meso-TiO2 nanotubes possess a large specific surface area (136 m(2) g(-1)) and narrow mesopore size distribution (∼10 nm). By using NO(x) as a probe molecule, the Al2O3/meso-TiO2 nanotube films exhibit better sensing performance than that of mesoporous TiO2 nanotubes, in terms of their high sensitivity, fast response-recovery time, and good stability in air at room temperature. The outstanding performance in the gas sensing ability of Al2O3/meso-TiO2 nanotubes is a result of their one-dimensional tubular and mesoporous nanostructures, advantageous for the adsorption and diffusion of NO(x) gas. In addition, the sensing response is greatly improved by virtue of the decorated Al2O3 on the surfaces of the TiO2 nanotubes, which acts as an energy barrier to suppress charge recombination. The structural properties of the Al2O3/meso-TiO2 nanotubes makes them a viable novel gas sensor material at room temperature.
Collapse
Affiliation(s)
- Renjiang Lü
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, PR China
| | | | | | | | | | | | | | | | | |
Collapse
|
27
|
Park WJ, Choi KJ, Kim MH, Koo BH, Lee JL, Baik JM. Self-assembled and highly selective sensors based on air-bridge-structured nanowire junction arrays. ACS APPLIED MATERIALS & INTERFACES 2013; 5:6802-6807. [PMID: 23841667 DOI: 10.1021/am401635e] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We describe a strategy for creating an air-bridge-structured nanowire junction array platform that capable of reliably discriminating between three gases (hydrogen, carbon monoxide, and nitrogen dioxide) in air. Alternatively driven dual nanowire species of ZnO and CuO with the average diameter of ∼30 nm on a single substrate are used and decorated with metallic nanoparticles to form two-dimensional microarray, which do not need to consider the post fabrications. Each individual nanowires in the array form n-n, p-p, and p-n junctions at the micro/nanoscale on single substrate and the junctions act as electrical conducting path for carriers. The adsorption of gas molecules to the surface changes the potential barrier height formed at the junctions and the carrier transport inside the straight semiconductors, which provide the ability of a given sensor array to differentiate among the junctions. The sensors were tested for their ability to distinguish three gases (H2, CO, and NO2), which they were able to do unequivocally when the data was classified using linear discriminant analysis.
Collapse
Affiliation(s)
- Won Jeong Park
- School of Mechanical and Advanced Materials Engineering, KIST-UNIST-Ulsan Center for Convergent Materials, Ulsan National Institute of Science and Technology, Ulsan, Korea
| | | | | | | | | | | |
Collapse
|
28
|
Lipatov A, Varezhnikov A, Wilson P, Sysoev V, Kolmakov A, Sinitskii A. Highly selective gas sensor arrays based on thermally reduced graphene oxide. NANOSCALE 2013; 5:5426-5434. [PMID: 23661278 DOI: 10.1039/c3nr00747b] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The electrical properties of reduced graphene oxide (rGO) have been previously shown to be very sensitive to surface adsorbates, thus making rGO a very promising platform for highly sensitive gas sensors. However, poor selectivity of rGO-based gas sensors remains a major problem for their practical use. In this paper, we address the selectivity problem by employing an array of rGO-based integrated sensors instead of focusing on the performance of a single sensing element. Each rGO-based device in such an array has a unique sensor response due to the irregular structure of rGO films at different levels of organization, ranging from nanoscale to macroscale. The resulting rGO-based gas sensing system could reliably recognize analytes of nearly the same chemical nature. In our experiments rGO-based sensor arrays demonstrated a high selectivity that was sufficient to discriminate between different alcohols, such as methanol, ethanol and isopropanol, at a 100% success rate. We also discuss a possible sensing mechanism that provides the basis for analyte differentiation.
Collapse
Affiliation(s)
- Alexey Lipatov
- Department of Chemistry, University of Nebraska - Lincoln, Lincoln, NE 68588, USA
| | | | | | | | | | | |
Collapse
|